Placing an employee's signature to mailing

I have written a letter to be emailed out and would like to add my Dean's signature. I have a png.file. I tried to drop a picture box into the letter just above his name, but it won't allow me. What other ways may I do this?

You can't drop an image INTO a text block. However, what most folks do is simply end the text of their mailing, then drag in an IMAGE block from the left, then turn the "CAPTIONS" on for that image block.

I went ahead and popped into your account and made a video of myself walking through this process. I didn't have the image of the signature, but you are welcome to pop into my Support Copy, pop the image in and use that if you want!